Improvement in feeding devices for grinding-mills



S. MORRISON.

Feeding-Devices for Grinding-Mills.

N0.]49,598, PatentedAprill4,l874.

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UNITED STATES PATENT O FIOF.

SIMEON MORRISON, OF OLINTON, ILLINOIS, ASSIeNoR To HIMSELF, JOHN MORRISON, AND JAMES w. MORRISON.

IMPROVEMENT IN FEEDING DEVICES FOR GRINDING-MILLS.

Specification forming part of Letters Patent No. 149,598, dated April 14, 1874 application filed January 20, 1874.

To all whom it may concern:

Be it known that I, SIMFON MORRISON, of Clinton, in the county of De Witt and in the State of Illinois, have invented a new and useful Improvement in Conductors for Mill-Feed and I do hereby declare that the following isa full, clear, and exact description thereof, reference being had to the annexed drawings, making a part of this specification, in which Figure 1 is an elevation of my improved conductor for mill-feed. Fig. 2 is a sectional elevation of the same. Fig. 3 is a sectional bottom view.

The same letters of reference are employed in all the figures in the designation of identical parts.

This invention is more especially designed for use in conducting shorts and middlings, to be reground, from the shoe through the eye of the runner-stone without any possibility of clogging on the wall thereof through the influence of the centrifugal force developed by the rotation of .the stone. My improvement consists in constructing the conductor with two boots or spouts, reaching down throughthe eye of the runner-stone to near the face of the -bed-stone, and having their lower ends bent obliquely forward in the direction of the rotation of the runner-stone,-so as to give a direction to the stuff coinciding as nearly as possible with the line of direction it is caused to take after its escape from the spouts on its way to the bed-stone.

To enable those skilled in the art to make and use my invention, I will now proceed to briefly describe its construction and operation.

The upper portion of the conductor is a hollow cylinder, A, with a funnel-shaped mouth, A, slipped into the open end of a cylindrical cup, B, the bottom of which has two circular apertures, b and b", diametrically opposite to pose set forth.

each other. These apertures are covered, respectively, by the boots or spouts O and G, which terminate at their upper ends in ores,- cent-shaped heads 0 and c as best seen in Fig. 3, having vertical" flanges c and 0 to clasp around the lower end of the cup B. Pins projecting from the bottom of the cup pass through corresponding holes in the heads of the spouts, and hold the latter in proper position with referen ceito the apertures 12 and b. The spouts are made so as to diverge slightly when attached to the cup. This divergence is increased at their lower ends, which are also bent in opposite directions outward from the common plane of their axes, so as to stand out obliquely in the manner shown best in Fig.2. The angle at which these ends shall stand to a vertical must be varied with the rate of speed of different runner-stones, it being in each case so calculated that the direction of discharge of the stuif will coincide with the direction the centrifugal force'causes it to take on its way from the spouts to the bed-stone. In this way there a SIMEON MORRISON. Witnesses:

CHARLES H. BENNETT,

WILLIAM F. HARROLD. 

